Drier.



C'. H. KLEIN DRIER.

APPLICATION FILED SEPT. I7, I911- 1 ,272,676. Patented July 16, 1918 El cm i7 1 UU/UIIJU noun 17 sun 17 9 G If 0 o 11 0 ms uomels nzrsns m. PMDYD-LIYMOH wlsumamm o. c.

cHARLEs I-I. KLEIN, OFJCI-IYASKA,MI1\T1\TESO'VJJA.v

DRIER.

Specification of Letters Patent.

Patented July 16, 1918.

Application filed September 17, 1917. Serial No. 191,723.

To all whom it may concern:

Be it known that I, CHARLES H. KLEIN, a citizen of the United States, residingat Chaska, in the county of Carver and State of Minnesota, have invented a new and useful Improvement in Driers, of which the following is a specification.

This invention relates to improvements in driers and more particularly to improved means for drying bricks in an eflicient manher. It has been ditficult in the past to dry bricks evenly without cracking or checking during the process of drying, this defect oc curring principally because the heat has been inefliciently applied and not evenly distributed. The long time consumed in drying has also been objectionable. mary object of this invention is to overcome these objections. To this end my invention comprises the features of construction, combination of parts and the improved method of drying produced by the same as will be hereinafter fully described and claimed.

In the accompanying drawing forming partof this specification, Figure 1 is a cross section of my invention, and Fig. 2 is a longitudinal section taken on the line X-X of Fig. 1. e

In the drawing, a suitable chamber is produced by the floor 2, oppositely arranged side walls 3 and l, and top or ceiling 5. The ends of this structure are closed by suitable doors 6, which may be either hinged or removably secured in place. Upon the floor are suitably arranged track rails 7, suitable for the Wheels 8 of trucks B to run upon into and out of the structure thus produced. Each truck is constructed with a series of superimposed skeleton, racks: 9 supported upon end uprights 10, which are carried by the base 11 or body of the truck. These racks are so positioned that pallets 12 loaded with bricks 13 may be easily placed and loaded upon the truck, there being a single pallet of bricks placed on each tray and the distance between the trays being sufficient, so that there is free air space between the top of each pallet of bricks, and the lower surface of the tray immediately above the same. The two opposite side walls 3 and 4 are constructed with circuitous passages 0 leading from suitable ducts 14L near the floor of the structure and from a blower 15, which forces air over suitable heating coils 20 of suitable temperature from a suit- The priable feeder 16. The passages Gin the walls 3 and at are constructed with port openings 17 into the chamber formed by the floor 2, sides 3 and 4, ceiling 5 and doors 6. The ports 17 are arranged. in each of the walls 3 and 4, opening into the space immediately between each adjacent pair of racks and pallets, so that the current of drying medium will be forced across the space, first below the lowermost pair of pallets, thence through the ports and passages in the opposite wall,

thence up and across the space between the pair of pallets immediately above and so on throughout the entire course of pallets on the truck or trucks, t-herc'being suitable horizontal batlle walls 18 provided in the side walls, which assist in' producing the cir cuito'us passage of drying medium as de scribed. At the top of the structure, after the drying medium'has passed over the topmost pallets of bricks, said medium laden with the moisture which has been absorbed from the bricks is conducted through a suit able opening or chimney 19 to the outeratmosphere. Thus the bricks are gradually dried from the bottom upwardly until all or substantially all of the moisture has been absorbed leaving the bricks evenly dried, free from checks and cracks. It will be noted that the pallets on the truck fit closely between the walls of the structure, so that substantially no heating medium will. escape upwardly without passing through the cireuitous passage as described. A fresh supply of heated moist air is admitted through ports 20 from the supply passages C to mix with the moisture laden air which is blown through each and every port opening 17 across the bricks on the pallets in the drying chamber and upon the trucks.

The structure set forth can be constructed of any length so that as many trucks may be accommodated at one time as desired, it being noted that the trucks when placed in the drier fit with their ends abutting and that the trays are constructed or arranged at even. corresponding heights, so that the air ingress ports will register with the spaces between them. The air and heat are applied gradually, the temperature being gradually raised and the dryness being evenly maintained without crackin the bricks. The heating medium employe may be from any suitable source desired, so long as the circulation thereof is forced upwardly through and across the pallets of bricks sucscribed bricks are more evenly dried in much less time than heretofore.

Having described my invention, what I.

claim as new and desire to protect .byLetters Patent is 1. A drier comprising, in combination, a chamber having side walls, a truck movable into and out of said chamber having a series of superimposed trays upon which pallets of bricks may be placed with spaces above and between said bricks, said walls being formed with communicating ducts leading into the spaces between-said trays and connecting the spaces in series from bottom to top, the uppermost ends of said ducts exhausting to the outer atmosphere and a source of air drying medium connected with the lowermost end-of said ducts for forcing said drying medium upwardly through and across the spaces between said trays and the bricks thereon.

2. A drier, comprising, in combination, a chamber having side walls formed with a plurality of ducts, the lowermost of said ducts being connected with a suitable source of forced drying medium and the uppermost of said ducts exhausting outwardly, a plurality oftrucks movable into and out of said drier, each of said trucks having a tier of superimposed trays-spaced apart and adapted to 'holdpallets of spaced bricks thereon, said ducts being arranged in the opposite side walls of said structure to form communicating channels connecting the spaces between the superimposed trays in series, so

that said drying medium is forced across the lowermost space between said trays, thence across the space between the pair of trays across the spaces between said trays from the bottom to the top of said. truck and finally exhausting outwardly.

3. A drier of the class set forth, comprising, in combination, a drying chamber having side walls and end doors, a conveyor track leading longitudinally through the space between said side walls, a plurality of trucks movable into and out of said chamber on said track, each of said trucks having tiers ofsuperimposed trays spaced apart and fitting closely between said side walls, all of saidtrays'of said trucks fitting closely endwise together and between said doors,'a suitable source of air drying medium, and a blower for forcing said drying medium, said side walls being formed with upwardly leading ducts with which said source of drying medium is connected at the lower end of said structure, said ducts leading serially through the spaces between said trays upwardly back and forth across each of said trucks, whereby the drying medium is forced above and between bricks placed between said trays in a Zig zag course upwardly, and passages connected directly with said source of drying medium and leading into said ducts at a series of points so that fresh drying medium is mixed with the moist drying medium to dry the latter during the zig zag course-of the drying medium through the drying chamber.

In testimony whereof I have signed my name to this specification.

CHARLES H. KLEIN.

-(Jopies of this patent "may bewobtainedforefive cents each, by addressing the :Gommissioner of Iatents Washington, D.- C.

immediately above and so on back and forth 7 

